问题
填空题
有鸡兔共38只，脚有100只，鸡有______只，兔有______只．
答案
假设全是鸡
（100-38×2）÷（4-2）
=（100-76）÷2
=24÷2
=12（只）
38-12=26（只）
答：鸡有26只，兔有12只．
故答案为：26，12．
搜题请搜索小程序“爱下问搜题”
有鸡兔共38只，脚有100只，鸡有______只，兔有______只．
假设全是鸡
（100-38×2）÷（4-2）
=（100-76）÷2
=24÷2
=12（只）
38-12=26（只）
答：鸡有26只，兔有12只．
故答案为：26，12．
Passage Four
Why haven’t British government bodies initiated any studies
A．Because they do not take the problem of sleepy drivers on motorways as of great significance.
B．Because they have not been aware of the seriousness of the problem of sleepy drivers.
C．Because they have no figures on the number of accidents caused by drivers’ sleepiness.
D．Because they plan to support relevant researches or a general study on "driver behaviour".